Dear Mr. Chaplin,
Thank you for posting your request on History Hub!
We searched the National Archives Catalog and located the Consolidated Correspondence Files, 1794 - 1890 in the Records of the Office of the Quartermaster General (Record Group 92) and Letters Received, 1801 - 1889 in the Records of the Office of the Secretary of War (Record Group 107) that may have correspondence on this topic. For more information about these records, please email the National Archives at Washington, DC - Textual Reference (RDT1) at Archives1reference@nara.gov.
Due to the COVID-19 pandemic and pursuant to guidance received from the Office of Management and Budget (OMB), NARA has adjusted its normal operations to balance the need of completing its mission-critical work while also adhering to the recommended social distancing for the safety of NARA staff. As a result of this re-prioritization of activities, you may experience a delay in receiving an initial acknowledgement as well as a substantive response to your reference request from RDT1. We apologize for this inconvenience and appreciate your understanding and patience.
We hope this is helpful. Best of luck with your research!